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<head><meta charset="utf-8"><title>weekly meeting 2020-02-20 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html">weekly meeting 2020-02-20 #54818</a></h3>

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<a name="188634158"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188634158" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188634158">(Feb 20 2020 at 12:53)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in 2 hours 7 minutes</p>



<a name="188634228"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188634228" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188634228">(Feb 20 2020 at 12:54)</a>:</h4>
<p>I will be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202020-02-20.20.2354818/near/188634177" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202020-02-20.20.2354818/near/188634177">pre-triage in a parallel topic</a></p>



<a name="188634264"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188634264" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188634264">(Feb 20 2020 at 12:55)</a>:</h4>
<p>this week we have scheduled check-in's from WG-async-await and WG-diagnostics</p>



<a name="188634410"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188634410" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188634410">(Feb 20 2020 at 12:57)</a>:</h4>
<p>Hmm I don't know if either of the WG-async-await leads ( <span class="user-mention" data-user-id="116009">@nikomatsakis</span> and <span class="user-mention" data-user-id="127859">@Taylor Cramer</span>  ) will be around at check-in time.</p>



<a name="188634436"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188634436" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188634436">(Feb 20 2020 at 12:57)</a>:</h4>
<p><span class="user-mention" data-user-id="116883">@tmandry</span> is the co-lead now, probably web site needs to be updated</p>



<a name="188634453"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188634453" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188634453">(Feb 20 2020 at 12:57)</a>:</h4>
<p>meanwhile, for WG-diagnostics: <span class="user-mention" data-user-id="124288">@oli</span> and <span class="user-mention" data-user-id="119031">@Esteban Küber</span> , will one of you be available to provide checkin info for WG-diagnostics?</p>



<a name="188644640"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188644640" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188644640">(Feb 20 2020 at 14:57)</a>:</h4>
<p>I may be late for meeting today. A few announcements I wanted to make. First, <strong>we <a href="https://blog.rust-lang.org/inside-rust/2020/02/14/upcoming-compiler-team-design-meetings.html" target="_blank" title="https://blog.rust-lang.org/inside-rust/2020/02/14/upcoming-compiler-team-design-meetings.html">scheduled upcoming design meetings</a>.</strong></p>
<ul>
<li>On Feb 28th we will discuss our triage procedures and how we can make them more efficient. See <a href="https://github.com/rust-lang/compiler-team/issues/247" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/247">rust-lang/compiler-team#247</a> for more details.</li>
<li>On Mar 6th, we will discuss plans to extract rustc's representation of types and trait solving into a standalone library. See <a href="https://github.com/rust-lang/compiler-team/issues/234" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/234">rust-lang/compiler-team#234</a> for more details.</li>
</ul>



<a name="188644697"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188644697" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188644697">(Feb 20 2020 at 14:58)</a>:</h4>
<p>Second, I just created a topic for pre-discussion on triage in <a class="stream-topic" data-stream-id="185694" href="/#narrow/stream/185694-t-compiler.2Fwg-meta/topic/focused.20and.20efficient.20triage.20compiler-team.23247">#t-compiler/wg-meta &gt; focused and efficient triage <a href="https://github.com/rust-lang/compiler-team/issues/247" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/247"><a href="https://github.com/rust-lang/compiler-team/issues/247" target="_blank" title="https://github.com/rust-lang/compiler-team/issues/247">compiler-team#247</a></a></a></p>



<a name="188645148"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645148" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645148">(Feb 20 2020 at 15:02)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span>! Add a <span aria-label="wave" class="emoji emoji-1f44b" role="img" title="wave">:wave:</span> emoji to show you're here :)</p>



<a name="188645357"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645357" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645357">(Feb 20 2020 at 15:04)</a>:</h4>
<p>so, lets spend five minutes on ...</p>



<a name="188645360"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645360" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645360">(Feb 20 2020 at 15:04)</a>:</h4>
<h2>Announcements</h2>



<a name="188645366"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645366" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645366">(Feb 20 2020 at 15:04)</a>:</h4>
<ul>
<li>Please review <a href="https://internals.rust-lang.org/t/rollup-never-always-guidance/11827" target="_blank" title="https://internals.rust-lang.org/t/rollup-never-always-guidance/11827">rollup guidance</a> if you haven't yet.</li>
<li>Also, see triagebot's new notification support: <a href="https://internals.rust-lang.org/t/triagebot-notifications/11857" target="_blank" title="https://internals.rust-lang.org/t/triagebot-notifications/11857">https://internals.rust-lang.org/t/triagebot-notifications/11857</a> (not for everyone, but take a look!)</li>
</ul>



<a name="188645370"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645370" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645370">(Feb 20 2020 at 15:04)</a>:</h4>
<ul>
<li>see nikos above</li>
</ul>



<a name="188645469"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645469" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645469">(Feb 20 2020 at 15:05)</a>:</h4>
<blockquote>
<p>"If a PR may break a build but there is no reason to not roll it up, but is deemed unlikely to, then  ..."</p>
</blockquote>
<p>that's too many buts for me :)</p>



<a name="188645564"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645564" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645564">(Feb 20 2020 at 15:06)</a>:</h4>
<p>heh, complex conditionals indeed</p>



<a name="188645570"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645570" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645570">(Feb 20 2020 at 15:06)</a>:</h4>
<p>what is MIR migrate mode ?</p>



<a name="188645649"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645649" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645649">(Feb 20 2020 at 15:07)</a>:</h4>
<p>NLL migrate mode presumably</p>



<a name="188645763"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645763" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645763">(Feb 20 2020 at 15:08)</a>:</h4>
<p>oh, in case its not clear from nikos' message:</p>



<a name="188645776"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645776" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645776">(Feb 20 2020 at 15:08)</a>:</h4>
<ul>
<li>we have <em>no</em> steering meeting tomorrow</li>
</ul>



<a name="188645826"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645826" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645826">(Feb 20 2020 at 15:09)</a>:</h4>
<p>would be nice to add the rollups guidance to forge as <span class="user-mention silent" data-user-id="219696">XAMPPRocky</span> pointed out</p>



<a name="188645840"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645840" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645840">(Feb 20 2020 at 15:09)</a>:</h4>
<p><span class="user-mention" data-user-id="116266">@Santiago Pastorino</span>  it's already there</p>



<a name="188645850"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645850" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645850">(Feb 20 2020 at 15:09)</a>:</h4>
<p>it was largely copied from the forge</p>



<a name="188645860"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645860" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645860">(Feb 20 2020 at 15:09)</a>:</h4>
<p>ahh cool :)</p>



<a name="188645918"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645918" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645918">(Feb 20 2020 at 15:10)</a>:</h4>
<p>okay, so, onto the meeting itself</p>



<a name="188645941"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645941" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645941">(Feb 20 2020 at 15:10)</a>:</h4>
<p>I have a <a href="https://hackmd.io/gfEQaT8IRPeX9crGFhMwpA?both" target="_blank" title="https://hackmd.io/gfEQaT8IRPeX9crGFhMwpA?both">hackmd here</a> for today's meeting</p>



<a name="188645954"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645954" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645954">(Feb 20 2020 at 15:10)</a>:</h4>
<p>first up, we have five beta nominations</p>



<a name="188645979"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188645979" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188645979">(Feb 20 2020 at 15:10)</a>:</h4>
<p>beta-nom 1/5 "Revert "Remove checked_add in Layout::repeat“” <a href="https://github.com/rust-lang/rust/issues/69241" target="_blank" title="https://github.com/rust-lang/rust/issues/69241">#69241</a></p>



<a name="188646009"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646009" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646009">(Feb 20 2020 at 15:11)</a>:</h4>
<p>This is not fixing the root cause right?</p>



<a name="188646012"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646012" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646012">(Feb 20 2020 at 15:11)</a>:</h4>
<p>so this is interesting because its working around an LLVM bug</p>



<a name="188646031"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646031" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646031">(Feb 20 2020 at 15:11)</a>:</h4>
<p>it definitely seems weird to isolate this one thing</p>



<a name="188646089"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646089" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646089">(Feb 20 2020 at 15:12)</a>:</h4>
<p>Still; better to paper over to avoid a known case of unsoundness than nothing imo</p>



<a name="188646098"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646098" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646098">(Feb 20 2020 at 15:12)</a>:</h4>
<p>but if it does the trick, and this change wasn't super crucial to performance in the first place</p>



<a name="188646105"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646105" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646105">(Feb 20 2020 at 15:12)</a>:</h4>
<p>then I'm fine with a backport.</p>



<a name="188646143"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646143" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646143">(Feb 20 2020 at 15:13)</a>:</h4>
<p>doesn't worth a FIXME there to easily revisit it later?</p>



<a name="188646161"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646161" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646161">(Feb 20 2020 at 15:13)</a>:</h4>
<p><span class="user-mention silent" data-user-id="126931">centril</span> <a href="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188646009" title="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188646009">said</a>:</p>
<blockquote>
<p>This is not fixing the root cause right?</p>
</blockquote>
<p>but yes, as noted in <a href="https://github.com/rust-lang/rust/issues/69225" target="_blank" title="https://github.com/rust-lang/rust/issues/69225">#69225</a>, the root cause is LLVM mis-optimization. We will likely address that via an upgrade to LLVM 10 (see PR <a href="https://github.com/rust-lang/rust/issues/67759" target="_blank" title="https://github.com/rust-lang/rust/issues/67759">#67759</a> )</p>



<a name="188646165"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646165" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646165">(Feb 20 2020 at 15:13)</a>:</h4>
<p>seems fine to add a fixme, but that seems separate from backport question though</p>



<a name="188646171"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646171" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646171">(Feb 20 2020 at 15:13)</a>:</h4>
<p>yep</p>



<a name="188646238"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646238" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646238">(Feb 20 2020 at 15:14)</a>:</h4>
<p>( <span class="user-mention" data-user-id="116266">@Santiago Pastorino</span> if you want to file such a PR "revisit ..." I'll happily r+ )</p>



<a name="188646254"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646254" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646254">(Feb 20 2020 at 15:14)</a>:</h4>
<p>I think as long as we track the follow-up work in <em>some way</em>, I don't particularly care whether we do it via a FIXME or just an (assigned) issue.</p>



<a name="188646279"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646279" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646279">(Feb 20 2020 at 15:14)</a>:</h4>
<p>(I literally mean "I don't care" as in I'm fine with such a modification.)</p>



<a name="188646288"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646288" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646288">(Feb 20 2020 at 15:15)</a>:</h4>
<p>sounds like beta-accepted?</p>



<a name="188646304"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646304" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646304">(Feb 20 2020 at 15:15)</a>:</h4>
<p>anyway it seems like we have beta-accepted, yeah</p>



<a name="188646324"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646324" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646324">(Feb 20 2020 at 15:15)</a>:</h4>
<p>beta nom 2/5: “Do not ICE when encountering yield inside async block” <a href="https://github.com/rust-lang/rust/issues/69175" target="_blank" title="https://github.com/rust-lang/rust/issues/69175">#69175</a></p>



<a name="188646494"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646494" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646494">(Feb 20 2020 at 15:17)</a>:</h4>
<p>bug -&gt; delay_span_bug basically; seems fine</p>



<a name="188646495"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646495" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646495">(Feb 20 2020 at 15:17)</a>:</h4>
<p>yeah this seems like a clear beta-accept</p>



<a name="188646641"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646641" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646641">(Feb 20 2020 at 15:18)</a>:</h4>
<p>beta-nom 3/5: ""Account for bounds and asociated items when denying _"" <a href="https://github.com/rust-lang/rust/issues/69148" target="_blank" title="https://github.com/rust-lang/rust/issues/69148">#69148</a></p>



<a name="188646751"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646751" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646751">(Feb 20 2020 at 15:19)</a>:</h4>
<p>this ... seems good ...</p>



<a name="188646797"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646797" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646797">(Feb 20 2020 at 15:19)</a>:</h4>
<p>although fiddling with astconv makes me more nervous :P</p>



<a name="188646849"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646849" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646849">(Feb 20 2020 at 15:20)</a>:</h4>
<p>its a bit heavier than the previous PR we were looking at. :)</p>



<a name="188646880"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646880" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646880">(Feb 20 2020 at 15:20)</a>:</h4>
<p>honestly</p>



<a name="188646889"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646889" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646889">(Feb 20 2020 at 15:20)</a>:</h4>
<p>I might be fine with just letting this lie?</p>



<a name="188646895"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646895" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646895">(Feb 20 2020 at 15:20)</a>:</h4>
<p>as in, let it ride the trains</p>



<a name="188646917"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646917" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646917">(Feb 20 2020 at 15:20)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span>  how confident are you about the change? :D</p>



<a name="188646919"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646919" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646919">(Feb 20 2020 at 15:20)</a>:</h4>
<p>let me check the issues in Question</p>



<a name="188646939"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646939" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646939">(Feb 20 2020 at 15:21)</a>:</h4>
<p>see if there is some big reason to rush a backport, rather than let it conitnue to ICE</p>



<a name="188646954"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646954" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646954">(Feb 20 2020 at 15:21)</a>:</h4>
<p>/me arrives and skims the PR</p>



<a name="188646958"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646958" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646958">(Feb 20 2020 at 15:21)</a>:</h4>
<p>I was thinking the same thing</p>



<a name="188646960"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646960" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646960">(Feb 20 2020 at 15:21)</a>:</h4>
<p>it's sorta unstable anyways</p>



<a name="188646979"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646979" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646979">(Feb 20 2020 at 15:21)</a>:</h4>
<p>err, wrong PR... I take that back</p>



<a name="188646982"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188646982" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188646982">(Feb 20 2020 at 15:21)</a>:</h4>
<p>the ICE <em>is</em> pretty bad</p>



<a name="188647072"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647072" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647072">(Feb 20 2020 at 15:22)</a>:</h4>
<p>but it has to do with people using <code>_</code> in bounds?</p>



<a name="188647085"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647085" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647085">(Feb 20 2020 at 15:22)</a>:</h4>
<p>ah I see, yeah okay this regressed in PR <a href="https://github.com/rust-lang/rust/issues/67597" target="_blank" title="https://github.com/rust-lang/rust/issues/67597">#67597</a>, as reported in issue <a href="https://github.com/rust-lang/rust/issues/68801" target="_blank" title="https://github.com/rust-lang/rust/issues/68801">#68801</a></p>



<a name="188647125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647125">(Feb 20 2020 at 15:23)</a>:</h4>
<p>My inclination is still to let it ride the trains</p>



<a name="188647148"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647148" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647148">(Feb 20 2020 at 15:23)</a>:</h4>
<p>How long until next release / beta branch?</p>



<a name="188647154"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647154" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647154">(Feb 20 2020 at 15:23)</a>:</h4>
<p>anyone want to argue the other side? Is <span class="user-mention" data-user-id="119031">@Esteban Küber</span> around to push for a backport?</p>



<a name="188647169"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647169" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647169">(Feb 20 2020 at 15:23)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> March 12th 2020 UTC</p>



<a name="188647188"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647188" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647188">(Feb 20 2020 at 15:23)</a>:</h4>
<p>(because plausibly we could see if we get experience from nightly)</p>



<a name="188647206"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647206" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647206">(Feb 20 2020 at 15:24)</a>:</h4>
<p>lets decline for backport</p>



<a name="188647265"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647265" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647265">(Feb 20 2020 at 15:24)</a>:</h4>
<p>but state on ticket that if someone wants to fight us, we've got our fists ready</p>



<a name="188647287"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647287" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647287">(Feb 20 2020 at 15:24)</a>:</h4>
<p>(I'm joking, but my point is, I don't want to act like its a final decision?)</p>



<a name="188647324"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647324" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647324">(Feb 20 2020 at 15:25)</a>:</h4>
<p>or at least that we are reasonable people.</p>



<a name="188647331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647331">(Feb 20 2020 at 15:25)</a>:</h4>
<p>anyway</p>



<a name="188647352"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647352" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647352">(Feb 20 2020 at 15:25)</a>:</h4>
<p>seems good. "current decision: no backport because too big, but let us know if you want us to revisit the question"</p>



<a name="188647496"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647496" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647496">(Feb 20 2020 at 15:26)</a>:</h4>
<p>beta nom 4/5: "Fix MIR typeck soundness holes" <a href="https://github.com/rust-lang/rust/issues/69145" target="_blank" title="https://github.com/rust-lang/rust/issues/69145">#69145</a></p>



<a name="188647703"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647703" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647703">(Feb 20 2020 at 15:28)</a>:</h4>
<p>(sorry, I got distracted by the shiny code and didn't post the emoji votes as fast as I should have)</p>



<a name="188647710"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647710" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647710">(Feb 20 2020 at 15:28)</a>:</h4>
<p>ugh, I guess I'm behind on reviewing that (haven't had <em>any</em> time for reviews this week)</p>



<a name="188647724"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647724" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647724">(Feb 20 2020 at 15:28)</a>:</h4>
<p>oh this hasn't even merged, heh.</p>



<a name="188647736"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647736" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647736">(Feb 20 2020 at 15:28)</a>:</h4>
<p>would be good to get it in nightly soon yeah; I think it's important that we backport this as well</p>



<a name="188647743"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647743" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647743">(Feb 20 2020 at 15:28)</a>:</h4>
<p>(including stable backport)</p>



<a name="188647758"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647758" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647758">(Feb 20 2020 at 15:29)</a>:</h4>
<p>we'</p>



<a name="188647769"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647769" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647769">(Feb 20 2020 at 15:29)</a>:</h4>
<p>we'll discuss stable backports in a minute</p>



<a name="188647778"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647778" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647778">(Feb 20 2020 at 15:29)</a>:</h4>
<p>but yeah I think this looks good for beta</p>



<a name="188647798"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647798" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647798">(Feb 20 2020 at 15:29)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> would you prefer to table this until after it lands on nightly?</p>



<a name="188647812"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647812" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647812">(Feb 20 2020 at 15:29)</a>:</h4>
<p>perhaps <span class="user-mention" data-user-id="116083">@pnkfelix</span> has more time to review it?</p>



<a name="188647813"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647813" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647813">(Feb 20 2020 at 15:29)</a>:</h4>
<p>(given that we don't branch beta until march, right?)</p>



<a name="188647874"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647874" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647874">(Feb 20 2020 at 15:30)</a>:</h4>
<p>why is it imp't to stable backport it?</p>



<a name="188647887"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647887" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647887">(Feb 20 2020 at 15:30)</a>:</h4>
<p>yeah I can do the review, I pretty much already have done so, effectively.</p>



<a name="188647911"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647911" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647911">(Feb 20 2020 at 15:30)</a>:</h4>
<p>that is, is there some particular reason?</p>



<a name="188647921"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647921" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647921">(Feb 20 2020 at 15:30)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> it's a soundness hole; allowing code to compile that shouldn't</p>



<a name="188647925"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647925" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647925">(Feb 20 2020 at 15:30)</a>:</h4>
<p>or because soundness</p>



<a name="188647944"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647944" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647944">(Feb 20 2020 at 15:30)</a>:</h4>
<p>and could cause forward compat issues if we don't plug it quickly</p>



<a name="188647975"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647975" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647975">(Feb 20 2020 at 15:31)</a>:</h4>
<p>I'm not sure soundness alone is always enough to justify backports</p>



<a name="188647982"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647982" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647982">(Feb 20 2020 at 15:31)</a>:</h4>
<p>we have lots of soundness holes</p>



<a name="188647995"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647995" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647995">(Feb 20 2020 at 15:31)</a>:</h4>
<p>is it a recent regression, or long-standing problem?</p>



<a name="188647997"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188647997" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188647997">(Feb 20 2020 at 15:31)</a>:</h4>
<p>its always a tradeoff, is all I'm saying</p>



<a name="188648010"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648010" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648010">(Feb 20 2020 at 15:31)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> yes, recent regression</p>



<a name="188648013"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648013" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648013">(Feb 20 2020 at 15:31)</a>:</h4>
<p>introduced in 1.41.0</p>



<a name="188648028"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648028" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648028">(Feb 20 2020 at 15:31)</a>:</h4>
<p>(anyway it seems like a fairly self-contained patch, just trying to understand full situation)</p>



<a name="188648036"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648036" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648036">(Feb 20 2020 at 15:31)</a>:</h4>
<p>ok</p>



<a name="188648113"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648113" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648113">(Feb 20 2020 at 15:32)</a>:</h4>
<p>So, beta-approved then? Or do you want to wait a week?</p>



<a name="188648132"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648132" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648132">(Feb 20 2020 at 15:32)</a>:</h4>
<p>(assuming that you <del>and</del> or I manage to actually win the review race within a week)</p>



<a name="188648169"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648169" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648169">(Feb 20 2020 at 15:33)</a>:</h4>
<p>I propose we land it on nightly first, but I think I can review it today</p>



<a name="188648204"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648204" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648204">(Feb 20 2020 at 15:33)</a>:</h4>
<p>ok we'll wait</p>



<a name="188648214"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648214" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648214">(Feb 20 2020 at 15:33)</a>:</h4>
<p>butI think it seems backportble</p>



<a name="188648227"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648227" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648227">(Feb 20 2020 at 15:33)</a>:</h4>
<p>beta-nom 5/5: “Make conflicting_repr_hints a deny-by-default c-future-compat lint” <a href="https://github.com/rust-lang/rust/issues/68586" target="_blank" title="https://github.com/rust-lang/rust/issues/68586">#68586</a></p>



<a name="188648236"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648236" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648236">(Feb 20 2020 at 15:33)</a>:</h4>
<p>(I'd like to highlight that waiting makes stable backport harder.)</p>



<a name="188648315"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648315" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648315">(Feb 20 2020 at 15:34)</a>:</h4>
<p>ah, there <em>is</em> a point release being proposed, isn't there?</p>



<a name="188648330"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648330" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648330">(Feb 20 2020 at 15:34)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> it's pretty likely yes</p>



<a name="188648332"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648332" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648332">(Feb 20 2020 at 15:34)</a>:</h4>
<p>that does change the calculus here a bit</p>



<a name="188648344"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648344" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648344">(Feb 20 2020 at 15:34)</a>:</h4>
<p>at the same time, backporting to insta-table without even trying on nightly...</p>



<a name="188648357"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648357" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648357">(Feb 20 2020 at 15:35)</a>:</h4>
<p>(probably should nclude note of such things in the initial announcements at meeting...)</p>



<a name="188648371"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648371" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648371">(Feb 20 2020 at 15:35)</a>:</h4>
<p>(that said I just read the PR now and I feel pretty good about it :)</p>



<a name="188648414"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648414" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648414">(Feb 20 2020 at 15:35)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> I'd say we get the nightly landed first, and any approval here is predicated on that?</p>



<a name="188648442"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648442" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648442">(Feb 20 2020 at 15:35)</a>:</h4>
<p>as in, we don't want to wait a week. but it hopefully could wait a day?</p>



<a name="188648454"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648454" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648454">(Feb 20 2020 at 15:36)</a>:</h4>
<p>sounds fair</p>



<a name="188648493"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648493" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648493">(Feb 20 2020 at 15:36)</a>:</h4>
<p>We are just three weeks out so I'd say it's pretty now or never wrt to a point release, that said, I also feel uncomfortable with direct to stable</p>



<a name="188648507"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648507" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648507">(Feb 20 2020 at 15:36)</a>:</h4>
<p>Point release probably Thursday next week or so</p>



<a name="188648526"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648526" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648526">(Feb 20 2020 at 15:36)</a>:</h4>
<p>okay well maybe lets finish discssion of beta-noms</p>



<a name="188648530"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648530" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648530">(Feb 20 2020 at 15:36)</a>:</h4>
<p>We'll decide tomorrow in release meeting</p>



<a name="188648534"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648534" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648534">(Feb 20 2020 at 15:36)</a>:</h4>
<p>we'll come back to this when we do the stable-noms</p>



<a name="188648561"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648561" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648561">(Feb 20 2020 at 15:36)</a>:</h4>
<p>(fyi I just r+'d)</p>



<a name="188648563"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648563" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648563">(Feb 20 2020 at 15:37)</a>:</h4>
<p>so, how about this  <a href="https://github.com/rust-lang/rust/issues/68586" target="_blank" title="https://github.com/rust-lang/rust/issues/68586">#68586</a> ...</p>



<a name="188648602"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648602" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648602">(Feb 20 2020 at 15:37)</a>:</h4>
<p>seems like a simple oversight</p>



<a name="188648630"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648630" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648630">(Feb 20 2020 at 15:37)</a>:</h4>
<p>this resolves the 2 regressions that <a href="https://github.com/rust-lang/rust/pull/68586#issuecomment-586624786" target="_blank" title="https://github.com/rust-lang/rust/pull/68586#issuecomment-586624786">@**simulacrum** reported here</a>?</p>



<a name="188648636"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648636" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648636">(Feb 20 2020 at 15:37)</a>:</h4>
<p>(or did we explicitly reject this from being backported ...?)</p>



<a name="188648736"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648736" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648736">(Feb 20 2020 at 15:38)</a>:</h4>
<p>backport+ from me</p>



<a name="188648745"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648745" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648745">(Feb 20 2020 at 15:38)</a>:</h4>
<blockquote>
<p>so, how about this <a href="https://github.com/rust-lang/rust/issues/68586" target="_blank" title="https://github.com/rust-lang/rust/issues/68586">#68586</a> ...</p>
</blockquote>
<p>I thought it had made it into beta but I was wrong about the repr hint one</p>



<a name="188648760"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648760" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648760">(Feb 20 2020 at 15:38)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> do you recall why you removed the T-compiler and beta-nominated labels? I'm guessing it was just ... what does one call it, butter fingers?</p>



<a name="188648766"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648766" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648766">(Feb 20 2020 at 15:38)</a>:</h4>
<p>(was right on the edge)</p>



<a name="188648787"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648787" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648787">(Feb 20 2020 at 15:39)</a>:</h4>
<p>oh oh I see</p>



<a name="188648799"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648799" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648799">(Feb 20 2020 at 15:39)</a>:</h4>
<p>okahy</p>



<a name="188648809"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648809" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648809">(Feb 20 2020 at 15:39)</a>:</h4>
<p>beta-accepted then</p>



<a name="188648847"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648847" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648847">(Feb 20 2020 at 15:39)</a>:</h4>
<p>(fwiw, beta crater run came in and it was like 2 regressions, so in hindsight I think leaving it as an error would have been fine too)</p>



<a name="188648918"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648918" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648918">(Feb 20 2020 at 15:40)</a>:</h4>
<p>I think we need to have a discussion about how to interpret crater results</p>



<a name="188648938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648938">(Feb 20 2020 at 15:40)</a>:</h4>
<p>i..e I think of it as intended to expose bugs</p>



<a name="188648994"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188648994" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188648994">(Feb 20 2020 at 15:41)</a>:</h4>
<p>but I'm not sure its a great idea to treat it as justification for "backport is unnecessary". Especially when we're talking about a non-risky backport...</p>



<a name="188649016"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649016" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649016">(Feb 20 2020 at 15:41)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> not making that argument <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="188649038"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649038" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649038">(Feb 20 2020 at 15:42)</a>:</h4>
<p><span class="user-mention silent" data-user-id="126931">centril</span> <a href="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188648847" title="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188648847">said</a>:</p>
<blockquote>
<p>(fwiw, beta crater run came in and it was like 2 regressions, so in hindsight I think leaving it as an error would have been fine too)</p>
</blockquote>
<p>don't know how else to read the above, honestly.</p>



<a name="188649098"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649098" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649098">(Feb 20 2020 at 15:42)</a>:</h4>
<p>unless you mean the whole PR was unnecessary</p>



<a name="188649100"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649100" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649100">(Feb 20 2020 at 15:42)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> before it was landed as a lint on nightly I mean</p>



<a name="188649117"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649117" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649117">(Feb 20 2020 at 15:42)</a>:</h4>
<p>but let's move on</p>



<a name="188649118"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649118" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649118">(Feb 20 2020 at 15:42)</a>:</h4>
<p>which is indeed an entirely different argument, though I think my response applieed there as well.</p>



<a name="188649138"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649138" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649138">(Feb 20 2020 at 15:42)</a>:</h4>
<p>okay so,</p>



<a name="188649140"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649140" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649140">(Feb 20 2020 at 15:42)</a>:</h4>
<p>that's all the beta noms</p>



<a name="188649150"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649150" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649150">(Feb 20 2020 at 15:43)</a>:</h4>
<p>let do stable noms</p>



<a name="188649205"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649205" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649205">(Feb 20 2020 at 15:43)</a>:</h4>
<p>stable-nom 1/3 : "Revert "Remove checked_add in Layout::repeat“” <a href="https://github.com/rust-lang/rust/issues/69241" target="_blank" title="https://github.com/rust-lang/rust/issues/69241">#69241</a></p>



<a name="188649249"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649249" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649249">(Feb 20 2020 at 15:43)</a>:</h4>
<p>seems as safe as it gets</p>



<a name="188649250"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649250" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649250">(Feb 20 2020 at 15:44)</a>:</h4>
<p>I guess this makes as much sense as the beta backport</p>



<a name="188649292"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649292" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649292">(Feb 20 2020 at 15:44)</a>:</h4>
<p>approved then</p>



<a name="188649298"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649298" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649298">(Feb 20 2020 at 15:44)</a>:</h4>
<p>apart from "edited a comment"</p>



<a name="188649331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649331">(Feb 20 2020 at 15:44)</a>:</h4>
<p>and those tend to make my build fail more often than not thanks to rustdoc mis-interpreting something as a test ;)</p>



<a name="188649344"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649344" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649344">(Feb 20 2020 at 15:44)</a>:</h4>
<p>stable-nom 2/3 “Do not ICE when encountering yield inside async block” <a href="https://github.com/rust-lang/rust/issues/69175" target="_blank" title="https://github.com/rust-lang/rust/issues/69175">#69175</a></p>



<a name="188649390"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649390" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649390">(Feb 20 2020 at 15:45)</a>:</h4>
<p>I need to run unfortunately, o/</p>



<a name="188649520"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649520" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649520">(Feb 20 2020 at 15:46)</a>:</h4>
<p>okay I guess <a href="https://github.com/rust-lang/rust/issues/69175" target="_blank" title="https://github.com/rust-lang/rust/issues/69175">#69175</a> is stable accepted too</p>



<a name="188649644"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649644" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649644">(Feb 20 2020 at 15:48)</a>:</h4>
<p>okay so we're back to <a href="https://github.com/rust-lang/rust/issues/69145" target="_blank" title="https://github.com/rust-lang/rust/issues/69145">#69145</a></p>



<a name="188649696"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649696" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649696">(Feb 20 2020 at 15:48)</a>:</h4>
<p>stable-nom 3/3: “Fix MIR typeck soundness holes” <a href="https://github.com/rust-lang/rust/issues/69145" target="_blank" title="https://github.com/rust-lang/rust/issues/69145">#69145</a></p>



<a name="188649797"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649797" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649797">(Feb 20 2020 at 15:49)</a>:</h4>
<p>at this point I think we probably are justified in backporting this to stable, with a note that we want the backport to wait until after it lands in nightly?</p>



<a name="188649829"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649829" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649829">(Feb 20 2020 at 15:49)</a>:</h4>
<p>(right?)</p>



<a name="188649920"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649920" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649920">(Feb 20 2020 at 15:50)</a>:</h4>
<p>okay accepted for stable backport</p>



<a name="188649940"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649940" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649940">(Feb 20 2020 at 15:50)</a>:</h4>
<p>(and  likewise, beta backport)</p>



<a name="188649947"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649947" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649947">(Feb 20 2020 at 15:50)</a>:</h4>
<p>sorry, was hesitating :)</p>



<a name="188649956"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649956" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649956">(Feb 20 2020 at 15:50)</a>:</h4>
<p>but I agree it seems "ok"</p>



<a name="188649959"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649959" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649959">(Feb 20 2020 at 15:50)</a>:</h4>
<p>raised to p=10 &amp; set to rollup=never</p>



<a name="188649990"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188649990" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188649990">(Feb 20 2020 at 15:51)</a>:</h4>
<p>my hesitation is based on experience in a nightly and not the PR itself, in other words</p>



<a name="188650154"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650154" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650154">(Feb 20 2020 at 15:52)</a>:</h4>
<p>as in, its just bad mojo to backport without having landed in nightly, right?</p>



<a name="188650162"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650162" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650162">(Feb 20 2020 at 15:52)</a>:</h4>
<p>because things you didn't expect <em>always</em> come up, right?</p>



<a name="188650200"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650200" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650200">(Feb 20 2020 at 15:52)</a>:</h4>
<p>anyway that's all the backports and we're a bit short on time</p>



<a name="188650221"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650221" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650221">(Feb 20 2020 at 15:53)</a>:</h4>
<p>the PR is probably going to land in 4 hours anyways :P</p>



<a name="188650234"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650234" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650234">(Feb 20 2020 at 15:53)</a>:</h4>
<p>there are three PR's marked <a href="https://github.com/rust-lang/rust/pulls?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3AS-waiting-on-team+label%3AT-compiler+" target="_blank" title="https://github.com/rust-lang/rust/pulls?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3AS-waiting-on-team+label%3AT-compiler+">waiting on team</a></p>



<a name="188650424"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650424" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650424">(Feb 20 2020 at 15:55)</a>:</h4>
<p>there's been ongoing discussion about this one, right? "Print nicer async/await trait errors for generators in any place in the error 'stack'" <a href="https://github.com/rust-lang/rust/issues/67116" target="_blank" title="https://github.com/rust-lang/rust/issues/67116">#67116</a></p>



<a name="188650465"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650465" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650465">(Feb 20 2020 at 15:55)</a>:</h4>
<p>but I think its largely back in the the PR author's hands now, right?</p>



<a name="188650486"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650486" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650486">(Feb 20 2020 at 15:55)</a>:</h4>
<p>As in, we should probably revise the tag to say its not waiting on us anymore ?</p>



<a name="188650671"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650671" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650671">(Feb 20 2020 at 15:57)</a>:</h4>
<p>as for "Rename asm! to llvm_asm! " <a href="https://github.com/rust-lang/rust/issues/68404" target="_blank" title="https://github.com/rust-lang/rust/issues/68404">#68404</a>, I <strong>assume</strong> that the team its waiting on there is T-lang ?</p>



<a name="188650712"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650712" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650712">(Feb 20 2020 at 15:57)</a>:</h4>
<p>okay well we are almost out of time</p>



<a name="188650785"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650785" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650785">(Feb 20 2020 at 15:58)</a>:</h4>
<p>there was an issue i wanted help prioritizing: "Significant performance regression on the <code>encoding</code> benchmark" <a href="https://github.com/rust-lang/rust/issues/69197" target="_blank" title="https://github.com/rust-lang/rust/issues/69197">#69197</a></p>



<a name="188650795"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650795" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650795">(Feb 20 2020 at 15:58)</a>:</h4>
<p>(erp, sorry, I have to run but</p>



<a name="188650799"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650799" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650799">(Feb 20 2020 at 15:58)</a>:</h4>
<p><span class="user-mention silent" data-user-id="116083">pnkfelix</span> <a href="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188650671" title="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188650671">said</a>:</p>
<blockquote>
<p>as for "Rename asm! to llvm_asm! " <a href="https://github.com/rust-lang/rust/issues/68404" target="_blank" title="https://github.com/rust-lang/rust/issues/68404">#68404</a>, I <strong>assume</strong> that the team its waiting on there is T-lang ?</p>
</blockquote>
<p>yes</p>



<a name="188650810"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650810" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650810">(Feb 20 2020 at 15:58)</a>:</h4>
<p><span class="user-mention silent" data-user-id="116083">pnkfelix</span> <a href="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188650465" title="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188650465">said</a>:</p>
<blockquote>
<p>but I think its largely back in the the PR author's hands now, right?</p>
</blockquote>
<p>yes</p>



<a name="188650816"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650816" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650816">(Feb 20 2020 at 15:58)</a>:</h4>
<p>I don't know why it's waiting on T-Lang</p>



<a name="188650826"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650826" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650826">(Feb 20 2020 at 15:58)</a>:</h4>
<p>it doesn't seem like a language team issue</p>



<a name="188650872"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188650872" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188650872">(Feb 20 2020 at 15:59)</a>:</h4>
<p>If t-compiler wants to rename the macro then it seems like their call</p>



<a name="188651018"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651018" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651018">(Feb 20 2020 at 16:00)</a>:</h4>
<p>that confuses me, it is a language feature (albeit an unstable, highly experimental one)</p>



<a name="188651024"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651024" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651024">(Feb 20 2020 at 16:00)</a>:</h4>
<p>however, I have to run</p>



<a name="188651026"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651026" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651026">(Feb 20 2020 at 16:00)</a>:</h4>
<p>okay well that's an hour.</p>



<a name="188651042"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651042" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651042">(Feb 20 2020 at 16:00)</a>:</h4>
<p>and we didn't get to the WG checkins. <span aria-label="sad" class="emoji emoji-2639" role="img" title="sad">:sad:</span></p>



<a name="188651070"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651070" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651070">(Feb 20 2020 at 16:01)</a>:</h4>
<p>re: the perf regression, I don't know how to prioritize -- but I feel that in general we should be tracking those like other regressions, so probably I would consider it p-high (but I didn't yet see how big of a regr it is)</p>



<a name="188651093"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651093" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651093">(Feb 20 2020 at 16:01)</a>:</h4>
<p>(on the plus side, I don't think anyone was available from the relevant WG's, apart from <span class="user-mention" data-user-id="116009">@nikomatsakis</span> , who has already said they have to run)</p>



<a name="188651096"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651096" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651096">(Feb 20 2020 at 16:01)</a>:</h4>
<p>89% max..seems imp't</p>



<a name="188651107"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651107" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651107">(Feb 20 2020 at 16:01)</a>:</h4>
<p>so, thanks for attending all!</p>



<a name="188651124"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651124" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651124">(Feb 20 2020 at 16:01)</a>:</h4>
<p>(It's not a language feature that was accepted by an RFC nor intended for stabilization; it's perma-unstable and similar to other <code>rustc_</code> in my mind)</p>



<a name="188651126"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651126" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651126">(Feb 20 2020 at 16:01)</a>:</h4>
<p>that is, thanks for attending all in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span></p>



<a name="188651205"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651205" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651205">(Feb 20 2020 at 16:02)</a>:</h4>
<p><span class="user-mention silent" data-user-id="116009">nikomatsakis</span> <a href="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188651096" title="#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818/near/188651096">said</a>:</p>
<blockquote>
<p>89% max..seems imp't</p>
</blockquote>
<p>okay P-high then</p>



<a name="188651437"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651437" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651437">(Feb 20 2020 at 16:04)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> could I assign <a href="https://github.com/rust-lang/rust/issues/69306" target="_blank" title="https://github.com/rust-lang/rust/issues/69306">https://github.com/rust-lang/rust/issues/69306</a> to you?</p>



<a name="188651973"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188651973" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188651973">(Feb 20 2020 at 16:10)</a>:</h4>
<p>maybe <span class="user-mention" data-user-id="121053">@varkor</span> has time for it? I'm already deep in several unfinished things</p>



<a name="188652047"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188652047" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188652047">(Feb 20 2020 at 16:11)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span>  yeah, very fair</p>



<a name="188652048"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188652048" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188652048">(Feb 20 2020 at 16:11)</a>:</h4>
<p>I can look into it, but it might not be soon — I've got too much going on IRL at the moment</p>



<a name="188652072"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202020-02-20%20%2354818/near/188652072" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202020-02-20.20.2354818.html#188652072">(Feb 20 2020 at 16:11)</a>:</h4>
<p>I'll assign you then <span class="user-mention" data-user-id="121053">@varkor</span></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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